(Beirut) – An Iraqi army division trained by the United States government allegedly executed several dozen prisoners in Mosul’s Old City, Human Rights Watch said today. Two international observers detailed the summary killings of four people by the Iraqi army’s 16th Division in mid-July 2017, and saw evidence that the unit had executed many more people, including a boy.

The US government should suspend all assistance and support to the 16th Division pending Iraq’s full investigation of the allegations and appropriate prosecutions, Human Rights Watch said. Under the “Leahy Law,” the US is prohibited from providing military assistance to any unit of foreign security forces if there is credible evidence that the unit has committed gross violations of human rights and no “effective measures” are being taken to bring those responsible to justice.

“The US government should make sure it is no longer providing assistance to the Iraqi unit responsible for this spate of executions but also suspend any plans for future assistance until these atrocities have been properly investigated,” said Sarah Leah Whitson, Middle East director at Human Rights Watch. “Given the widespread abuses by Iraqi forces and the government’s abysmal record on accountability, the US should take a hard look at its involvement with Iraqi forces.”​Two international observers independently told Human Rights Watch that on a day in mid-July at about 10 a.m. in Mosul’s Old City, they saw a group of Iraqi soldiers who identified themselves as members of the 16th Division lead four naked men down an alleyway, after which they heard multiple gunshots. The observers said other soldiers standing in the street told them that the four men were Islamic State (also known as ISIS) fighters.

Civilians in west Mosul have been ruthlessly exploited by the armed group calling itself the Islamic State (IS), which has systematically moved them into zones of conflict, used them as human shields, and prevented them from escaping to safety. They have also been subjected to relentless unlawful attacks by Iraqi government forces and members of the US-led coalition (hereon referred to as pro-government forces). In March and May 2017, Amnesty International researchers visited northern Iraq to document violations of international humanitarian law and human rights abuses by all sides of the conflict in west Mosul. The findings were published today in a new report: